improving image show, definately wip

app/controllers/merged/cards_controller.rb

@@ -7,7 +7,7 @@ module Merged
     end
 
     def set_image
-      @card.image_id = params[:image_id]
+      @card.image_id = params[:image_id].to_i
       @card.save
       redirect_to section_cards_url(@card.section.id) , notice: "Image selected: #{@card.image.name}"
     end

app/controllers/merged/images_controller.rb

@@ -18,6 +18,9 @@ module Merged
 
     def show
       @image = Image.find(params[:id])
+      @sections = Section.where(image_id: params[:id].to_i)
+      @cards = Card.where(image_id: params[:id].to_i)
+      @used = ((@cards.length > 0) || (@sections.length > 0))
     end
 
     def create

app/controllers/merged/sections_controller.rb

@@ -33,7 +33,7 @@ module Merged
     end
 
     def set_image
-      @section.image_id = params[:image_id]
+      @section.image_id = params[:image_id].to_i
       @section.save
       redirect_to section_url(@section.id) , notice: "Image selected: #{@section.image.name}"
     end